There's hiding in plain sight, and then there's the LizaCam USB Wall Plug. Disguised as your humble charger, this device houses a hidden camera, so you can keep an eye on your living space from any power outlet. Plug it into any standard wall outlet, and you can tap into the camera's HD feed straight from your smartphone, tablet, or computer via WiFi. The LizaCam can record audio and video to a Micro SD card and—of course—doubles as an actual charger in a pinch.